Phonograph.



PATENTED APR. 26, 1904.

P. GABLBR. PHONOGRAPH.

APPLIOATION FILED MAR. 30, 1903.

NO MODEL.

WAT 10044 Patented. April 26, 1904.

PATENT OFFICE.

I PAUL GABLER, OF LEIPZIG-GOHLIS, GERMANY.

PHONOGRAPH.

SPECIFICATION forming part of Letters Patent No. 758,521, dated April 26, 1904.

Application filed March 30, 1903.

To all whom it may concern:

Be it known that I, PAUL GABLER, a subject of the King of Saxony, and a resident of Leipzig-Gohlis, in the Kingdom of Saxony, Germany, have invented certain new and useful Improvements in Phonographs and the Like,

. of which the following is a full, clear, and exact description.

The present invention consists of a device for automatically changing the membrane-pin of a gramophone, phonograph, or the like, and comprises the details of construction hereinafter set forth, and particularly pointed out in the claims.

In order to render the present specification easily intelligible, reference is had to the accompanying drawings, in which similar letters of reference denote similar parts throughout, the several views.

Figure 1 is a front elevation of the device; Fig. 2, an end elevation; Fig. 3, a plan of the same. Fig. 4. is a View of the device seen from underneath, showing the pin-holder in in the open position; and Fig. 5 is a similar View showing the same closed and the pin clamped in position.

The pin-holder a, which is connected to the membrane, is in the form of a tube down which a pin may slide and in the lower end of which the said pin is clamped by means of a ring I), mounted to rotate'on the end of the 'said holder, and having an arm d fast thereon,

by means of which the said ring is turned. The said ring 6 further carries a spring 0, extending across the lower side or bottom of the tube a and adapted when the said ring is turned on the tube to come underneath the lower tube-orifice and prevent the pin which has just been allowed to slide down the tube from falling out before it has been properly clamped in the holder by means of the ring I).

To the neck a of the sounding-box f a disk g is attached, which is adapted to be turned on the said neck, and the said ring 9 carries a cam-nose p, hereinafter described, and an arm 9, having a horizontally-extending foot formed on its outer end. When the ring g is revolved, the arm 9 strikes the arm d of the clamping-ring Z) and turns the same from the position shown in Fig. 5 to that in Serial N0..150,286. (No model.)

is a plate It, extending substantially horizontally and having a downwardly-extending tubular prolongation, as at 70, which forms a prolongation of the tubular holder a, but does not contact directly with the top of the same,

but leaves it sufficient play for its necessary vibration with the membrane. To the center of the plate h a pivot-pin Z is fixed,extending upwardly, and on this pin a drum m is mounted to rotate. This drum on has a series of perforations in its bottom close to the periphery of the same, which orifices serve to contain each a reserve membrane-pin. The bottoms of the holes a are closed by'the plate h, with the exception of the orifice which lies above the tubular extension k, and the exterior part of the drum is provided with a series of ratchet-teeth, which may be operated by a spring-pawl on the movement of the ring 9. When the ring g is moved, the cam-nose p pushes the spring-pawl 0 back, and when the ring g is again turned back the spring-pawl turns the drum just far enough to bring the next pin over the extension k ready for the next change.

The ring g may be oscillated backward and forward by any suitable means. Thus, for instance, as shown, the ring may be provided with teeth around a part of its circumference, and a segment a may engage these teeth, said segment being mounted on the sounding-box- 5 supporting part 8 on a pivot t and may be turned back and forward to renew the pin by means of a handle.

The device is manipulated in the following manner: When the pin is worn or damaged, 9

the handle of the segment is turned to move the ring 9 from the position shown in Fig. 4 to that shown in Fig. 5, and the cam-nose 1) simultaneously pushes back the pawl 0. This first movement of the ring g turns the ring I) to release the pin which had hitherto been clamped in the holder at and allows the same to fall out. On turning the ring g back the spring-pawl 0 shifts the drum m and brings a new pin overthe feed-tube is. This pin falls 1 down the same; but before it can fall out at the bottom of the holder (6 the plate g has passed underneath the same, and as this plate passes back the spring 0 holds the pin fast until the total return movement of the ring 9 has securely fastened the substitute pin in the holder.

The ring 9 might be moved by any suitable parts of the device automatically instead of by hand; but the manner of operating the device is immaterial.

I claim as my invention 1. A device in connection with gramophones, phonographs or the like, for automatically releasing and clamping a membranepin in the holder, comprising the combination of a pin-chute above the pin-holder, a rotary drum above the chute to bring a pin over the same when rotated a part of a revolution, an oscillatory ring mounted on the neck of the sounding-box and means in connection with the same for releasing the pin in the holder on one movement of its oscillation, and for rotating the said pin-drum one step on the backward oscillation, and for preventing the fresh pin supplied from falling out at the end of the holder until it is properly clamped by the said return movement substantially as described.

2. In a device of the class specified, the combination of a pin-chute mounted above the pin-holder, a clamping-ring having radially-extending arm on the pin-holder to clamp the pin, a rotary pin-carrying drum mounted above the chute, and an oscillatory ring mounted on the neck of the sounding-box,

said ring having an arm to operate the clamp- I ing-ring in both directions when oscillated, and a pawl device operated by said ring to bring a fresh pin over the chute and means in connection with said ring for preventing the fresh pin from falling out at the end of the holder before it is properly clamped in the manner and for the purpose substantially as described.

3. In a device of the class specified, the combination of a pin-chute a mounted above the pin-holder, a clamping-ring I) having radiallyextending arm (I to clamp the pin in the holder, a pin-drum mounted above the chute and having the pins arranged therein in proximity to its periphery, a ratchet-wheel fast on said drum, a ring g mounted on the neck of the sounding-board, an arm q on the same to engage and operate the arm d of the clamping-ring backward and forward at each oscillation of the said ring, a spring-pawl adapted to engage the teeth of the drum ratchet-wheel and a cam or lug on the said ring 9 to operate said spring-pawl on the movement of the ring, a horizontally-extending foot to said arm q to extend under the mouth of the holder when the ring is being oscillated and a spring 0 mounted on the said clamping-ring and extending below the mouth of the holder in the manner and for the purpose substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

PAUL GABLER.

Witnesses:

MORITZ SPREER, R. H. DUNN. 

